Vaporizing-carbureter.



C. P. BYRNES.

VAPORIZING CARBURETER APPLICATION FILED Nov. 2. 191/.

Patented May 6, 1919.

INVENTOR {WITNESSES till till

' trough, this having a suitable switch which UNITED STATES PATENT OFFICE.

CLARENGEP. BYBNES, 0F SEWIGKLEY, PENNSYLVANIA.

VAPORIZING-CARBUBETEB.

Speciflcation of Letters Patent.

Patented May 6, 1919.

original application filed March a, 1913, Serial No. 752,285. Divided and this application filed November 2,

1917. Serial No. 199,980.

To all whom it may concern:

Be it hown that I, CLARENCE P. Brianne, a citizen of the United States, and resident of Sewickley, Allegheny county, Pennsylvania, have invented a new and useful Improvement in Vaporizing-Garbureters, of.

which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which the figure is a diagrammatic sectional side elevation showing one form of the invention. I

My invention relates to the feeding to explosive engines of mixed fuel and air in cases where the fuel is nonvolatile or at least only slowly volatile, under-ordinary atmospheric conditions. The object of the invention is to provide an improved vaporizing carbureter or vaporizer and mixer of simple and eflicient construction which will convert the hydrocarbon into a vapor previous to its admixture with the main supply oi air.

in carrying out the invention, a portion of the exhaust gases from the engine is used to heat the rich mixture of vaporized oil and air, a valve being preferably provided to regulate the amount of exhaust passing through the heating jacket.

- The finely divided hydrocarbon fuel is mixed with primary air, the mixture is heated and then a further supply of diluting air is fed to the heated mixture. The final mixture is preferably kept heated as, for example, by leading the supply pipe from the carbureter out from the exhaust pipe and in between the pairs or triplets of cylinders to the feed side and kept warm by the hot water jacket of these cylinders.

The vaporizer shown is of the type in which the kerosene feature is fed by gravity through the vaporizing trough, but my claims are not limited thereto.

ln starting the device an electric heater is preferably provided in the vaporizing may be cut in or out.

The system may be applied to diflerent types of 'carbureters, such as the automatic type, the mechanical type or the mixed type having, in the form shown, the chamber 5 connected by tubes 6 with the vaporizing chamber above the level of the oil therein. From the chamber 5 the vapor flows into chamber 7, whence it passes up through the needle valve opening 8, and is sucked up by the air fed in through the channel 9 and drawn down to the base of a venturi-shaped mixing chamber 10. In its neck I have shown a small spray tube 11 above the nozzle and in the vapor well. The needle valve 12 is adjustable from the bottom of the device.

The air channel 9 contains the throttle valve 13, which is preferably connected with the valve 14 controlling the flow of kerosene to the vapor trough. in the form shown they are both mounted on the same stem or shaft 15, which is suitably connected to the throttle control.

Primary air is preferably supplied through air ducts 24 leading from the external air into the vaporizing chamber and controlled by spring-pressed valves 25. The air fed in through these valves will give a rich mixture and they may be in the form of small holes, or may be valve controlled, as shown.

In the-use of-this apparatus, in starting the engine current will be supplied to the.

electric heater, as for example by a switch on thedash of an automobile, and the throttle will be turned to allow kerosene to flow into the vaporizing trough. As the vapor is formed the engine is started, and when the exhaust from the engine passing throughat the vaporizing temperature by the exhaust products from the engine, the control of theair and kerosene in the form shown is mechanical, and the proportion of the mixture is controlled automatically in the usual manner of the ordinary carburetor. The system may-be applied to practically any type of carbureter, the annular vaporizing chamber preferably taking the place of .the concentric float chamber now used on many types of carburetor, thus giving a neat compact assemblage and feeding of vapor to the jet from different points in the trough through which the vapor flows as it is formed.

The carbureter is preferably set' on the exhaust side of the engine in the branch pipe 16 leading from the main exhaust pipe 17 of the engine, the hand controlled valve 18 being provided by which the proportion ofexhaust gases passing through the heating jacket for the carbureter may be changed and controlled.

This application is a division of my parent application No. 752,285, filed March 6, 1913, for vaporizing carburetors.

I claim:

1. In a carbureter, an engine exhaust channel having a branch channel arranged to split the exhaust gases from the engine and pass them partly through the exhaust channel and partly through the branch, a primary carbureter having a fuel feed passage arrangcd to lead from a fuel reservoir, means for finely dividing the liquid hydro carbon emerging from the feed passage, means for feeding a relatively small amount of primary air to the finely divided hydrocarbon to form a rich mixture, a channel through which the rich mixture passes, said channel lying in the branch exhaust channel and arranged to be heated thereby, a jet opening into which the rich mixture is fed, a venturi channel into which the jet opening discharges, a main air channel leading to the venturi channel and arranged to supply a large volume of air relative to the jet supply of rich mixture, said main air supply being independent of the pressure in the feed reservoir, the venturi channel opening nto the eng1ne suction channel beyond the et opening, whereby the suction of the en- M gine will suck the relatively large main air supply through the venturi and thereby induce the flow of heated rich mixture through the jet opening under varying suctions.

2. In a earbureter, an engine exhaust channel having a branch channel arranged to split the exhaust gases from the. engine and pass them partly through the exhaust channel and partly through the branch, a primary carbureter having a fuel feed passage arranged to lead from a fuel reservoir,

means for finely dividing the liquid hydroof primary air to the finely divided hydrocarbon to form a rich mixture, a channel through which the rich mixture passes, said channel lying in the branch exhaust channel and arranged to be heated thereby, a jet opening into which the rich mixture is fed, a venturi channel into which the jet opening discharges, a main air supply channel leading to the venturi channel and arranged to supply a large volume of air relative to the jet supply of rich mixture, said main air supply being independent of the pressure in the fuel reservoir, the venturi channel opening into the engine suction channel beyond the jet opening, whereby the suction of the engine will suck the relatively large main air supply through the venturi and thereby induce the flow of heated rich mixture through the jet opening under varying suctions, and adjustable means for controlling the volume of exhaust gases passing through the main exhaust channel and the branch channel respectively.

3. In a carbureter, an engine exhaust channel having a branch channel arran ed to split the exhaust gases from the engine and pass them partly through the exhaust channel and partly through the branch, a primary carburetor having a fuel feed passage arranged to lead from a fuel reservoir, means for finely dividing the liquid hydrocarbon emerging from the feed passage, means for feeding a relatively small amount of primary air to the finely divided hydrocarbon to form a rich mixture, a channel through which the rich mixture passes, said channel lying in the branch exhaust channel and arranged to be heated thereby, a jet opening into which the rich mixture is fed, a venturi channel into which the jet opening discharges, a main air supply channel leading to the venturi channel and arranged to supply a large volume of air relative to the jet supply of rich mixture, said main air supply being independent of the pressure in the fuel reservoir, the venturi channel opening into the engine suction channel beyond the jet opening, whereby the suction of the engine will suck the relatively large main air supply through the venturi and thereby induce the flow of heated rich mixture through the jet opening under varying suctions. and a hand controlled valve arranged to control the -main air supply passing to the venturi channel.

4. A carbureter having an engine exhaust channel with a branch arranged to split the exhaust gases and pass thempartly direct and partly through the branch. a carbureter having a heating portion within the branch for finely dividing the liquid hydrocarbon, a jet opening, a venturi channel into which the jet opening is directed and arranged to point for the exhaust gases, and adjustable receive a relatively large amount of air means arranged to control the proportion of 10 from the atmosphere, said venturi channel exhaust gases passing through the engine being subject to the engine suction and actexhaust channel and the branch channel.

ing to suck in air and thereby induce the In testimony whereof, I have hereunto How of fuel through the jet and mix it with set my hand.

the air, the mixture being heated within the branch exhaust channel beyond the splitting CLARENCE P. BYRNES. 

